Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
BUNYAN
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
(origin: Welsh, Celtic, and Gaelic.) From Bunan, a squat, short person.
Patronymica Britannica (1860)
BUNYAN. Nomen venerabile! Although associated in sound Avith that pedal excrescence, a h(nnwn,—so calculated to hinder the Progress of a Pilgrim 1— this surname is in reality derived from the Welsh Ab Kuion, the sou of Enion, a personal name. So Bevan from Ab Evan, Bithell from Ab Ithell, &c. From Benyon to Bunyan, the transition is easy and natural. The Biinyans were a Gipsy race.
Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English